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  Home » Catalog » Portable Instruments » Confined Space » Multi Gas » QRAE II 1 to 4-Gas Monitor

QRAE II 1 to 4-Gas Monitor

Orderable Items QRAE II is a rugged, compact, and full-featured 1 to 4 sensor gas detector designed to provide continuous exposure monitoring of oxygen, hydrogen sulfide, carbon monoxide, and combustible gases for workers in hazardous environments.
Available in diffusion or pumped

  • Measures combustibles, O2, H2S, CO, and/or SO2 with plug-in sensors

  • Patented extended-life SPE O2 sensor is lead-free (RoHS compliant)

  • Best EMI/RFI immunity technology eliminates radio interference

  • Easy access to pump, sensors, filter, and battery

  • Up to 14 hours continuous operation with Li-Ion battery
    • Interchangeable Li-Ion and alkaline battery packs

  • Rugged IP-65 rated water and dust-resistant case
    • Concussion-proof design

  • Stores 64,000 datalogging points for download to a PC using ProRAE Studio Software





The versatile QRAE II gas monitor is available in diffusion or pumped for a variety of applications. Internal vibrating and loud 95-dB audible alarms alert workers to dangerous levels of toxic gas. The patented SPE O2 sensor provides extra life performance. A spare alkaline battery adapter is included for 10-hour back-up operation.

About ProRAE Software
ProRAE Suite Software for QRAE Plus, MultiRAE Plus, and MultiRAE IR models allows download of datalogged data and configuration settings to a PC and upload of new configuration settings to the instrument.

ProRAE Studio Software provides the same functionality for QRAE II, EntryRAE, MiniRAE 3000, ppbRAE 3000, and Ultra-RAE 3000 models.

A pumped version and other sensor configurations are available. Contact SKC for more information.